Triangle Properties and Angle Measures

A triangle is formed by three line segments that intersect only at their (a)   .

a point where the segments intersect is (a)   of a triangle.

The sum of the measures of the angles in a triangle is 180 degrees.

• True

• False

Classify this Triangle: Side lengths: 2cm, 3cm, 4cm

• Equilateral

• Right

• Isosceles

• Scalene

Classify this Triangle: Side lengths: 2cm, 3cm, 3cm

• Equilateral

• Isosceles

• Obtuse

• Obtuse

Find the measure of the indicated angle.

What type of triangle has angles measuring 60°, 60°, and 60°?

• Right

• Isosceles

• Equiangular

• Scalene

Find the measure of the missing angle.

• 30^o

• 110^o

• 150^o

• 40^o

Find the missing angle.

• 29° 
• 39° 
• 49° 
• 59° 

Find the measure of the indicated angle. 

• 26
• 36
• 85
• 144